This laer calibrator is made of high quality aluminum alloy, lightweight, high strength, achievable in long time use. The calibrator with a highly accurate and non-adjustable design uses infrared light with a tube device for easy and precise adjustment. Adjustable adapter with 8 holes, suitable for caliber from 0,177 do 0,50. Features: Made of high quality aluminum alloy material, lightweight, high strength, adjustable and long-lasting use. Radial calibrator, laser light has far, bright and bright light, which better helps to adjust the setting. The calibrator with a highly accurate and non-adjustable design uses infrared light with a tube device for easy and precise adjustment. The design of the battery is simple and beautiful, the tail part, which can be opened by cutting off, is convenient and practical. Adjustable adapter with 8 holes, suitable for caliber from 0,177 do 0,50. Technical data: Name: Laser Calibrator Material: Aluminum Alloy green colour Battery: 1 * CR2 battery (included) Power: < 5MW Diameter: 4,2 mm Product Size: 166*18*18mm/6,54*0,71 * 0,71 inch Item Weight: 60 g/2,12 oz packaging Size: 195*104*30mm/7,80*4,09 * 1,18 inch Package Weight: 131 g / 4,62 oz List of things do packing: 1 * laser calibrator 1 * screwdriver 8 * adapter 2 * Screw 1 * key